Aperture compensation circuit
AssigneeSony Corporation
InventorKinya Shinkai
Life of this patent
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Abstract
An aperture compensation circuit which includes a first differentiating circuit for differentiating an input signal to its input terminal to provide a primary differentiated signal, a squaring circuit for squaring the primary differentiated signal to provide a first signal, a second differentiating circuit for differentiating the primary differentiated signal from the first differentiating circuit to provide a secondary differentiated signal as a second signal, and a dividing circuit for dividing the first signal by the second to provide a contour compensation signal which is not affected by the steepness degree of the input signal.
Claims2
An aperture compensation circuit comprising:
- (a) first differentiating means for differentiating an input video signal to provide a primary differentiated signal;
- (b) squaring means for squaring said primary differentiated signal to provide a first signal [E'(t)].sup.2 ;
- (c) second differentiating means for differentiating said primary differentiated signal to provide a secondary differentiated signal as a second signal;
- (d) dividing means for dividing said first signal by said second signal to provide a third signal;
- and
- (e) means for superimposing said third signal on said input video signal to compensate for a contour of the video signal.
Dependencies are inferred from the claim text.